Recent advances in solid‐state metal–air batteries

Solid-state metal–air batteries have emerged as a research hotspot due to their high energy density and safety. Moreover, side reactions caused by infiltrated gases (O2, H2O, or CO2) safety issues liquid electrolyte leakage will be eliminated radically. However, the solid-state battery is still in its infancy, many thorny problems need solved, such large resistance of metal/electrolyte interface catalyst design. This review summarize some important progress key for batteries, especially lithium-, sodium-, zinc-based clarify core issues, forecast future direction batteries.